Five most unusual ekzoplanet

 
January 23, 2009, 11:50 am

five most unusual ekzoplanetfive most unusual ekzoplanetfive most unusual ekzoplanet 
five most unusual ekzoplanet   Search planets from distant stars - one of the most promising, interesting, but at the same time, and the challenges facing today`s astronomers. The main goal pursued by researchers, is searching extraterrestrial life, and if we can detect the planet from a distant star, inhabited by living organisms, it would be the greatest discovery since the beginning of observations of celestial objects rights.
And while the task of finding ekzoplanet very difficult - it is necessary to develop a methodology for determining the existence of planets around stars, to select the object of observation, an accurate measurement of variables stars. Only after analysis of the data can be said about the possibility of finding a specific star of one or more planets. The highest accuracy of measurements and calculations of a long time did not permit identification of at least one ekzoplanetu, and only in 1988, astronomers discovered the first planet from a distant star. But even then the precise evidence the scientific community was not given - only in 2003, the success of the team of astronomers has been officially confirmed. Since then the search ekzoplanet been put on line - so far found more than three hundred planets outside the solar system that are found in their impact on the movement of stars (there are very slight fluctuations in the stars) or the brightness of stars (when the observer and the planet Star is in line the amount of light, amounting to us from the star is reduced).
Nevertheless, there is the most reliable, smart, but also the youngest method of finding planets - their direct observation, because the development of astronomical equipment to such progress, which allows the light emitted directly to the star, and reflected from the planet. Now we invite readers to list the five most interesting ekzoplanet open by that time astronomers.
Planet star CoKu Tau 4 (constellation Taurus), which currently is the youngest known ekzoplanet - the age of the star is estimated today at just over 1 million years, which means that the age of the planet, and even less. The interest of astronomers to that object is clear - with the help of scientists can trace the mechanism of forming planetary systems, and test hypotheses based on the practice.
In contrast to previous ekzoplanete, PSR B1620-26 b is one of the oldest planets, the age which is estimated at 13 billion years, that is, an object three times over the Earth. Interestingly, however, that PSR B1620-26 b is part of a double star system in which one of the stars is a white dwarf and the second - the rapidly rotating pulsars.
But already the planet SWEEPS-10 is one of the most rapidly detected earth scientists - a year on it (a full rotation around a star) is only ten o`clock. In this case, the planet is extremely close to his mistress - 1, 2 million miles, that only three times the distance from Earth to the Moon. In order not to be absorbed by the star SWEEPS-10 must be extremely heavy, and indeed, the mass of the gas giant in the 1, 6 times the mass of Jupiter, the heavy planets in the solar system.
Most known ekzoplanet represent a huge gas giants, the size and weight comparable to Jupiter, or even more than his size. This is not surprising - that such objects could have the greatest impact on the star, and therefore are more likely to be detected with the help of modern technology. But among the found ekzoplanet giant is unusual and OGLE-2005-BLG-390Lb, which is a stone planet, very similar to Earth, albeit at 5, 5 times more than its weight. Unfortunately, the lives it is unlikely to exist, because the temperature on the surface of OGLE-2005-BLG-390Lb - minus 220 degrees Celsius on a scale that only a few tens of degrees above absolute zero temperature.
exactly the reverse situation on the surface of the object HD 149026b - one of the most difficult and hot ekzoplanet, where the temperature reaches two thousand degrees centigrade scale. It is at once to three times higher than the temperature of Venus, the hot planets in the solar system. An interesting and heating mechanism of HD 149026b. According to researchers, the planet is almost entirely absorbs the light falling on it from the star, through which they achieved such a huge temperature. Very high density of HD 149026b - with sizes comparable to the core of the planet Saturn is almost a hundred times heavier than the mass of the entire Earth.
No doubt, all of the above ekzoplanety unlikely to be manned - too extreme conditions on the surface of these objects. However, the search inhabited by living creatures the world has only just begun - nebezuspeshny is constantly searching for new sites, not only for new stars, but for those with so far have found the planet. And chances of finding a double of the Earth is still very high.

 

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